To investigate the anti-obesitic effect of FD extract which consisted of Mori radicis Cortex, Hoelen, Pueraria radix, Schizonepetae spica, Carthami Flos, Bupleuri radix and Saposhnikoviae radix in high-fat diet-fed female lean Zucker rats. Obesity was induced by feeding high-lipid diet contained $3\%$ corn oil and $1\%$ cholesterol for 8 weeks, in which FD extract was added to the diet for treatment group. The rats fed on the high fat diet showed increased gain of body weights, leading to enhanced feed efficiency ratio. Moreover high-fat diet induced hepatic lipid peroxidation and hyperlipemia. The body weight, food efficiency ratio and lipid peroxidation in the liver was decreased as compared with the rats fed on the high fat diet by FD extract. With all such changes, the blood biochemistry about lipid was, if anything, risen. These results suggest that FD extract was supposed to have effective ingredients for improving obesity for controlling adipose tissue.